Minor fix to let Vtk.jl support changes in Vtk 1.7.X versus 1.6.X

Author: amartinhuertas

Project.toml

@@ -38,7 +38,7 @@ LineSearches = "7.0.1"
 NLsolve = "4.3.0"
 QuadGK = "2.3.1"
 StaticArrays = "0.12.1"
-WriteVTK = "~1.6"
+WriteVTK = "1.7"
 julia = "1.0"
 
 [extras]

src/Visualization/Vtk.jl

@@ -167,7 +167,7 @@ function _generate_vtk_cells(
   type_to_vtknodes)
 
   V = eltype(cell_to_nodes)
-  meshcells = MeshCell{V}[]
+  meshcells = MeshCell{WriteVTK.VTKCellTypes.VTKCellType,V}[]
 
   d = _vtkcelltypedict()